I recently found new cracks on the wall where the stairs are in my 1970s home. How can I determine if these are "problem" cracks? And if they are, is there anything I can do about it? Thanks in advance.
It indicates the framing has shifted due to a point load. No, nothing you can do about it other than patch it, or cut it out and replace. The biggest "problem" will be trying to match the texture.
Unless you can push up against it and make it move there is little danger of the attic falling down.
Do you know if you have drywall or is it a plaster veneer?
The correct fix is to mud/tape and texture but you can make the cracks less visible by just caulking the crack - removing any excess caulk that isn't in the crack.
I agree with what the others have said. It's most likely not a problem, structurally. However, if it were me, I would go into the attic crawl space and look for possible loose or maybe broken rafters or truss support members. I have seen a truss support member that had a large knot in it fail after several years. Unlikely but possible.
I see you're from the Southern California area. So, no snow loads. Even less likely.
If you have a basement, do you have any cracks? Settling can cause similar issues.
In my garage, at the bottom edge of the drywall, there is a brown cement-like caulking that is starting to fall off. It feels like cement, but weaker. What is it and what is it's purpose? I've posted a picture below. Thanks
[img]https://cimg8.ibsrv.net/gimg/www.doityourselft.com-vbulletin/2000x1504/garage_drywall_aed2452ae88232790eedd7bd57b238f5abe74d53.jpg[/img]
I would like to attach a flexible TV wall mount to a wall with a total width of 12 cm. Since I'm a sub-tenant in the flat, I don't know what exactly this wall is made of, but it's for sure not concrete or brick, because it's more of a "hollow" sound when you knock on the wall. Considering that the ceiling is not made of plasterboard, I assume that it is aerated concrete. There is a bathroom on the other side of this wall.
I intend to use Fischer UX or Duopower wall plugs. Please recommend which ones are better and if it is enough to use 4 or would it be better to have more, e.g. 8?
In case the wall is made of plasterboard, will these Fischer wall plugs be ok? Do you recommend any other wall plugs?
What length of inserts should I use?
Thanks in advance for any help.